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Question Website Timeouts (WP when Traffic is high)

futureweb

futureweb

Regular Pleskian
Server operating system version
AlmaLinux release 8.6 (Sky Tiger)
Plesk version and microupdate number
Plesk Obsidian Version 18.0.47 Update #5
Hello,

we have the problem with a Wordpress site that we host that it always becomes very slow / get Timeouts when the customer sends out a newsletter and the traffic to the site increases. Normally the page is very fast, at times after the newsletter the browser remains 30 seconds white and then gets a timeout.

It seems that some service is reaching its limit here, but I can't find out which one.
There are no CPU spikes, there is enough RAM, IO is not greatly increased...
Unfortunately, I can't find any messages in the log files regarding:
- MaxRequestWorkers
- server reached max_children setting
- ...

Plesk itself / other Pages on the Server are accessible with normal speed.

I'm slowly running out of ideas what else to check. Which service could reach its limit here?!?

I hope you have one or two good ideas here! :)
Thanks
 
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